Anyone know also where to see some cool concept art, like character sketches and scenes. It can be your own project or something else, but I'd like to see some killer artwork. I'll post some of mine soon. Later all.

www.ikwarmachine.com has the best concept art you'll ever see...

www.sanctuslegacy.com has some awesome stuff, too, in the forums.

www.naomichen.sanctuslegacy.com/GR/ is an awesome website as well.

give this a shot

http://www.conceptart.org/forums/

LOL, yeah funaki, you beat me to it, there :)
Conceptart.org is the Mecca of concept artists, with quite a number of famous guys from the industry. Either the game industry, or the film industry, some comic books guys, too. I suggest you have some support for your jaw, and some way of absorbing excessive saliva before visiting this site...

www.gfxartist.com has got great artwork as well or www.epilogue.net